grab sample


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grab sample

[′grab ‚sam·pəl]
(mining engineering)
A random mode of sampling; the samples may be taken from the pile broken in the process of mining, or from a truck or car of ore or coal.
References in periodicals archive ?
Even the worst grab sample generated during the study was three to five times better than average septic effluent.
is working in Conmee Township where up to 28 grams of gold per tonne has been found through stripping, grab samples and diamond drilling.
The assays announced represented four grab samples from small outcrops in the mineralized area.
Grab samples from a roll-front uranium occurrence, exposed along the Waterton River near Fort McLeod, returned up to 2,000 ppm or .
Quartz-epidote-pyrite-clay alteration is associated with the stockwork zones and associated gold values from grab samples occur up to 1.